Load block



Feb. 7, 1933. w. wHlTE 1,896,266

LOAD BLOCK Filed June 13, 1951 INVENTOR /3 V" ,a M @wf 'ff 049%ATTORNEYS Patented Feb. 7, 1933 Unire arras WILLIAM wirrrn, or naarcnnvniann, cino, assrsnon ro riannuonrn onalvnl rarer y oFFIca fsa HOISTCOMPANY, (3F EUCLID, (1E-HO, A` CRPORATION 0F OHIO Y LOAD BLOCKApplication led June 13,

This inventionrelates to load blocks for hoists, cranes and likeapparatus, the function of such a load block being to provide connectionbetween the hook of the app tus and the sheaves of the hoisting cablesthereof whereby the hook may receive support from the sheaves.

It has been the general practice in the that the hoolr is in dependentrelation to the sheaves, and as these parts have some preciabledimensions it follows that maximum lift is reduced by this amount.

Itis the object of this invention to provide an arrangement whereby thehook is between,

instead of below, the sheaves so that the available lift of the hook maybe substantially that of the shea-ves.

The exact nature of this invention together with further objects andadvantages thereof will be apparent from the following description takenin connection with the accompanying drawing, in which Fig. 1 is a planview of an embodiment of the invention; Fig. 2 is a sectional elevationas in the plane of line 2 2, Fig. 1; and Fig. 3 is an end view.

l/Vith reference now to the drawing, the principal members of the loadblock are the frame 1, hook 2 and sheaves 3, a pair of the latter beingshown.

The frame is of generally arched form comprising a pair of leg` portions4 with a transverse or bridge portion 5 therebetween. The frame includesthe webs and flanges shown to provide against breaking down of its archunder the stresses imposed thereupon, as will be appreciated by onefamiliar with the art.

Particularly the bridge portion of the frame is provided with theupstanding flanges la and horizontal web l?) connecting the baseportions thereof to provide a typical section of U-shape. Y

The hook 2 is generally of conventional form, disposed between the legsof the frame, with its shank portion 6 secured with the central archportion thereof to be dependent from the latter as indicated Fig. 2. Themanner of securement includes the usual thrust bearing 7 immediatelyabove the open- 0 ing 6a in the frame through which the hook ies'i.serial No. 544,231.

shank 6 passes, whereby the-hook may swivel; andthe bolt 12 turned `ontoJthe hook shank.

t will be observed that this hoolr securing means does not projectabovev the frame, ,Y being located in the cavity provided bythe v5lll-characteristic of the frameat this point.4

For each of thelegportions 4 ofthe yframe is provided a sheave. pin 8.The frame is provided with aligned openings into which the sheave pinsare fitted and there welded as at 9, with portions ext-ending from thehookV and beyond l the frame as indicated Fig. 3. l

The sheaves 3 are mounted on the projecting portions of the pins 8 andthere secured 55 for free rotation as by the washers 10 and Cotter pins11.

rEhe frame is provided on each side with a guard ange 13 extending aboutand beyond the corresponding sheave for protection of the latter and itscable 14; the flanges 13 being interrupted by notches as at 15 to clearthe sheave cables.

By the arrangement described it will be apparent that the frame is instraddling relation with the hook, the sheaves being laterally disposedone at either side of the 1 hook, so that the latter is substantially atthe level of the sheaves instead of considerably therebelow asheretofore. Moreover, Vthe Y' frame does not extend substantially aboveorY below the sheaves, nor does the hook securing means project abovethe frame. In fact Y frame, sheaves and hook arel all so disposed as tobe substantially coextensive in vertical l'a5 dimension. Thus it will beapparent that the lift of thehoolr is substantially coincident with thatof the sheaves themselves. Also by the described arrangement eithersheave may be removed without dist'urbing either 90 its .cable or theother sheave. Atthe same time each cable is secured on its sheave by theguard flange provided.

What I c-laim is: I

1. A load block for the purpose described comprising a vframe ofgenerally arched form, a hoolr disposed between the legs of the frameand secured with the central arch portion thereof yto be dependent fromthe latter,VV

and a Vsheave mounted on either leg of the "'100 l es frame, said framecentral portion being of U'section, and securing means for said hookarranged in the cavity of said section.

2. A load bloc-lt for the purpose described comprising a frame ofgenerally arched form, a hook disposed between the legs of the frame andsecured with the central arch portion thereof to be dependent from thelatter, and on either leg of the frame, a sheave pinset thereinto toextend from the hook, and a sheave mounted on the projecting portion ofsaid pin.

3. A load block for the purpose described comprising a frame ofgenerally arched form, a sheave mounted on either leg of the frame, anda hook disposed between said sheaves and secured dependent from thecentrol arch portion of said fra-me, said hook being mounted forswivelling and said frame legs being spaced to permit said swivelling.In testimony whereof I hereby afix my signature.

' WILLIAM WHITE.

